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How to replace the oxygen sensor of a Mini R56

Model: Mini Mini R56, R55, R57 - Years 2007-2014
Part: Oxygen sensor

Let's see how to replace the oxygen sensor, also known as the "lambda sensor" on a Mini R56. Its main task is to measure the amount of oxygen present in the exhaust gases: this information is sent to the ECU, which uses it to adjust the air-fuel mixture, in order to optimize combustion, improving the engine efficiency. We remove the front plate of the engine compartment, removing ten bolts and three clips. Under the manifold, in a rather awkward position, we find our sensor, which must be unscrewed with a 22mm wrench and pulled away from the opposite side, also removing an electrical connector for more space.

Posted on 3 May 2025 by ScegliAuto

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